The Husqvarna 531118218 Quick Coupling is a genuine OEM hydraulic connection component designed for the PP455E power pack, WS-series wall saws including the WS400, WS440, WS440HF, WS442, WS460, WS462, WS463, WS482, and WS482HF, CS-series wire saws including the CS10 and CS2512, and the RC455 compactor. As a genuine OEM part, this coupling is built to Husqvarna's exact specifications, ensuring a hydraulic connection that performs the way the machine was designed to operate. Cross-reference part number 531118218 against your parts diagram to confirm fitment before ordering. DHS Equipment supplies this part to help keep your equipment running at full capacity.
Key Features
- Genuine OEM Hydraulic Integrity — Manufactured to Husqvarna's exact pressure ratings and port dimensions, ensuring the coupling seals and flows to the same standard as the original component it replaces.
- Tool-Free Snap Connection — Engineered for fast, secure engagement and release, this coupling connects hydraulic lines without additional tools, minimizing the effort required during equipment setup and changeover.
- Broad Cross-Family Compatibility — Fits the PP455E power pack, the full WS-series wall saw lineup, CS10 and CS2512 wire saws, and the RC455 compactor — a single part serving multiple Husqvarna construction platforms.
- Leak-Free Hydraulic Flow — A correctly seated quick coupling maintains consistent hydraulic pressure to the cutting head or drive system; a worn or damaged coupling causes pressure drop, erratic tool performance, and potential fluid loss on the worksite.
- Hydraulic System Safety — Using the correct OEM-spec coupling prevents unintended disconnection under pressure and protects operators and bystanders from hydraulic fluid release during operation.
A quick coupling is the hydraulic interface point that connects a power source — such as the PP455E power pack — to a hydraulic tool like a wall saw or wire saw. It allows operators to attach and detach hydraulic lines rapidly while maintaining a sealed, pressure-rated connection during cutting. When a quick coupling wears, cracks, or fails to seat properly, hydraulic pressure bleeds off, the connected tool loses power and cutting consistency, and fluid can escape the closed system — making prompt replacement essential for both performance and safe operation.
Part Details
| Part Number | 531118218 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Quick Coupling |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Pack | PP455E |
| Wall Saw | WS440HF |
| Wall Saw | WSC40 |
| Wall Saw | WS460 |
| Wall Saw | WS463 |
| Wall Saw | WS482HF |
| Wire Saw | CS10 |
| Wall Saw | WS400 |
| Wall Saw | WS440 |
| Wall Saw | WS462 |
| Wall Saw | WS482 |
| Wire Saw | CS2512 |
| Wall Saw | WS442 |
| Compactor | RC455 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
